?unique=08292a4)
?unique=08292a4)
Pemko 4131CRL Fire-Rated Automatic Door Bottom - Sponge Neoprene Insert
The Pemko 4131CRL is an architectural-grade automatic door bottom (ADB) engineered to provide a high-performance seal at the base of the door. This surface-applied or semi-mortise unit features a sophisticated drop-bar mechanism that lowers a Sponge Neoprene insert only when the door is closed. This unique design allows the door to swing freely without friction or seal skidding, then creates a tight, positive seal against the floor or threshold to block light, sound, and smoke.
High-Performance & Life Safety Features
- Advanced Acoustic & Smoke Barrier: Tested to ASTM E90 for sound attenuation and UL 1784 for air leakage, making it an essential component for soundproofing and smoke containment.
- Fire Rated Protection: Fully certified under UL 10C for positive pressure, ensuring compliance with strict commercial fire codes for up to 3-hour fire doors.
- Durable Sponge Neoprene (R) Insert: The high-quality neoprene remain flexible at extreme temperatures and resists deterioration from oils and cleaning chemicals, providing a long-lasting, slightly compressible seal.
- Zero-Drag Mechanism: The jamb-contacting plunger ensures hinge-side actuation, meaning the seal only drops in the final moments of door closure to prevent floor wear and door "hang up."
- Gap Coverage: Effectively fills gaps up to 3/4", making it perfect for doors with significant floor clearance or uneven transitions.
Technical Specifications
- Manufacturer: Pemko (ASSA ABLOY)
- Model: 4131CRL (Clear Anodized Aluminum)
- Mounting: Non-handed; can be Surface Applied or Semi-Mortised.
- Dimensions: 19/32" Width | 1-27/32" Overall Height.
- Fasteners: Supplied with #8 x 1-1/4" THSMS (Thru-Head Sheet Metal Screws).
- Customization: Available in lengths from 18" to 48"; can be field-trimmed by up to 2" (stock lengths only).
Pro-Tip for Soundproofing & Fire Safety
The Pemko 4131CRL is the gold standard for "sealing the fourth side" of a door. For maximum decibel reduction in offices or recording studios, ensure the plunger (the "button" on the hinge side) is adjusted so the seal drops evenly across the floor. The clean, symmetrical square-shaped case allows for a flush aesthetic whether you are mounting it to wood or hollow metal doors.
| Length | 36 Inch or 42 Inch or 48 Inch |
| Brand | Pemko |
| Insert Material | Neoprene |
| Fire Rated | Fire Rated |
| Mounting Type | Surface Mounted |
| Bottom Weatherseal Type | Automatic Door Bottom |
| Housing Finish | Aluminum |
| Sweeps, Door Bottom or Rain Drip | Door Bottom |
Recently Viewed Items